It's somehow very apt that this image of populism is a submarine.
The last time the Scots voted to remain part of the UK, one of the big debating points was Trident - a submarine based nuclear deterrent. Since then we've inherited Submarine May as our Prime Minister.
It seems that America has walls and the UK has submarines. Funny what people will vote for, isn't it?
There's a big UK submarine base in Scotland, isn't there? I admit I've wondered how it will be dealt with if Scotland votes to leave the UK. I'd argue that a Trident submarine base is of more functional significance than Trump's wall, though there's also definitely symbolism there re the UK as a nuclear power.
Also, hmmm, it won't really be the UK (or Great Britain) anymore if Scotland leaves. So what will the remainder's new name be?
If Scotland votes to leave, Perhaps Trump will come visit and try to stir up support for replacing Hadrian's wall with something newer and shinier. I'm sure he'd love to have a boat named after him, though an oil tanker or nuclear sub would be more Trump's style than a research vessel that will likely be studying the effects of something he deems an "alternative fact."